CVE-2023-27331

Foxit PDF Reader Annotation Use-After-Free Remote Code Execution Vulnerability

HIGH

7.8

CVSS Score

Published: May 3, 2024 at 01:55 AM UTC

Updated: June 17, 2026 at 05:44 AM UTC

2 products affected across 1 vendorPDF ReaderPDF Editor· also runs on 1 platform

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Severity

HIGH7.8

Exploit prediction

EPSS 4%

SSVC

No known exploit

Description

Foxit PDF Reader Annotation Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-19475.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

PDF Editor · Foxitsoftware

95%

v < 10.1.10.3785411.0.0.49893 ≤ v < 11.2.4.5377412.0.0.12394 ≤ v < 12.1.0.15250

Affected range stops below 10.1.10.37854, so it looks safe — our inference, not a vendor statement

Affected range stops below 11.2.4.53774, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.1.0.15250, so it looks safe — our inference, not a vendor statement

microsoft-windows (environment)

PDF Reader · Foxitsoftware

95%

v < 12.1.0.1525012.0.2 12.0.2.12465

Affected range stops below 12.1.0.15250, so it looks safe — our inference, not a vendor statement

microsoft-windows (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Windows · Microsoft

95%

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.foxit.com/support/security-bulletins.html

References (2)

Vendor Advisory

Source: [email protected]

https://www.foxit.com/support/security-bulletins.html

x_research-advisoryThird Party Advisory

Source: [email protected]

https://www.zerodayinitiative.com/advisories/ZDI-23-225/

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHzdi

Vector?

Quick Info

StatusANALYZED

CWE

CWE-416

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